log_input
The option documentation is properly formatted yet
Summary: "Log Input Events" Type: boolean Default: 0 Example: 1
This option will cause a lot of debug messages to be logged to fs-uae.log.txt. It is not recommended to enable this unless needed for testing and debugging.
Source: https://github.com/FrodeSolheim/fs-uae/blob/master/docs/options/log_input